Posted by Megan on .
With the image of O(2,1) after 2 reflections. one across the line y=5 and line x=1

11TH Geometry 
bobpursley,
refelection about y=5
distance from that line is 4, so new y is 9
now reflection about x=1
distance from that line is 3, so new O is
4,9 
11TH Geometry 
diondre,
classifying triangles